Malicious PDF — malware analysis report

Static analysis result for SHA-256 026b3989979586b7…

MALICIOUS

PDF

44.4 KB Created: 2020-10-27 06:55:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fed76ccf7adc4bb6694c9efcfb61a12 SHA-1: 47ecacd451000c26db86f324dd94ab0fb0a8c7e7 SHA-256: 026b3989979586b741d43346ce6f73b8a25bb05c9efe497ca8d7795baedd5c64
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to 'https://cctraff.ru/strik?keyword=free+champion+rotation+lol+ph'. Another critical heuristic, PDF_SEO_LINK_FARM, indicates a large number of external PDF links, with the first being 'https://s3.amazonaws.com/bevarolimesale/77164962836.pdf'. The ML classifier also flagged the PDF with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest a phishing or SEO poisoning attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/strik?keyword=free+champion+rotation+lol+ph
    • https://cdn-cms.f-static.net/uploads/4379377/normal_5f9706d527b51.pdf
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5f87507b49d6f.pdf
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/24a90.pdf
    • https://juxupadozimufa.weebly.com/uploads/1/3/4/3/134388451/7659371.pdf
    • https://dojarugakafep.weebly.com/uploads/1/3/4/4/134471698/sasolitowutived.pdf
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/jibigamefomoni.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bevarolimesale/77164962836.pdf
    • https://s3.amazonaws.com/henghuili-files/u_bahn_berlin_map.pdf
    • https://s3.amazonaws.com/zuxadol/acidemia_y_acidosis.pdf
    • https://s3.amazonaws.com/zuxadol/96018120810.pdf
    • https://s3.amazonaws.com/sajatesawodiji/momije.pdf
    • https://cdn.shopify.com/s/files/1/0432/2348/2530/files/bedford_county_gis_lookup.pdf
    • https://cdn.shopify.com/s/files/1/0504/2064/6048/files/microsoft_word_android_apk_old_version.pdf
    • https://cdn.shopify.com/s/files/1/0484/7645/5066/files/youtube_converter_and_downloader_apk.pdf
    • https://cdn.shopify.com/s/files/1/0496/5443/1893/files/letscom_fitness_tracker_id115uhr_instructions.pdf
    • https://uploads.strikinglycdn.com/files/06ae1759-8177-4590-9e64-6fb63e34d73a/8033106386.pdf
    • https://uploads.strikinglycdn.com/files/3775e91f-76f7-4b56-85b1-9e1e86faea69/33899077658.pdf
    • https://uploads.strikinglycdn.com/files/c269ebc2-9f28-45aa-b07c-e62448d89a62/whale_talk_themes.pdf
    • https://uploads.strikinglycdn.com/files/771e1098-d86e-4cb0-ac24-bb2ed5a39624/jinevukuxigutulex.pdf
    • https://uploads.strikinglycdn.com/files/884ecbf4-3007-4902-b8f5-49cf28e4d7ee/7633749570.pdf
    • https://cdn.shopify.com/s/files/1/0497/8311/1831/files/case_files_internal_medicine_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0488/0623/2229/files/82808397302.pdf
    • https://cdn.shopify.com/s/files/1/0503/0258/2969/files/nox_apk_free_download_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0476/3133/5590/files/matthew_5_niv_bible_study_tools.pdf
    • https://cdn.shopify.com/s/files/1/0497/9811/9585/files/papa_oom_mow_mow_original.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006faa.bin
229b0c231549bf2c266c9648bd7d2dbf52714bce79d4017b5b78551c4d1dae68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAA 4948 bytes
font_01_sfnt_off00008058.bin
2342d1c4df055112b557ff6f6418e4268f1b4b4c612f2fd8f571500e9aed565a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8058 10548 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.